3750 POE Problem

Answered Question
Jul 15th, 2008
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We have a WS-C3750G-24PS switch. when ever we tried to connect an ip phone to any free port it is not getting the power . So we have tried connecting the ip phone to another port which already one ip phone was working. That time also it didnt work and the old phone which was working also had the same problem after that. I tried giving shut/unshut to the individual port. IOS ver is c3750-ipbase-mz.122-25.SEB4. Did any one faced this problem before?Is this any know bug ??

Correct Answer by Edison Ortiz about 8 years 11 months ago

You are being affected by a bug, see:


Upgrade your IOS, in order to correct the issue.




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garytayl Tue, 07/15/2008 - 13:24
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Haven't experienced this before but you may want to give it a try by going into one of those interfaces and use: power inline never and then power inline auto.

Also, check the show post for any power issues.



Hieu Cao Tue, 07/15/2008 - 14:30
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Do you have port-security sticky option enabled in your switchport?

shibi.er Tue, 07/15/2008 - 21:50
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Thank you Very much Edison, Will go for the ios upgrade


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